Electric brake.



No. 817,606. PATENTED APR. 10, 1906. v G. R. YANGEY.

ELECTRIC BRAKE. APPLICATION FILED AUG- 7. 1905.

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INVENTQR (\1 awry/{Z2 yayuzy PATENTED APR. 10, 1906i ,G. R. YANCEY.

ELECTRIC BRAKE. APPLICATION FILED AUG. 7. 1905.

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FOURTH TO WILLIAM A. KELLER AND ONE-FOURTH ,TO KARL KELLER, OF LOUISVILLE, KENTUCKY.

ELECTRIC BRAKE.

Specification of Letters Patent.

Patented April 19, 190 3.

Application filed August '7, 1905. Serial No. 273,018.

To all whom, it may concern:-

Be it known that I, GEORGE R. YANCEY, a citizen of the United States, residing at Louisville, in the county of Jefferson and State of Kentucky have invented certain new and useful Improvements in Electric Brakes, ofwhich the following is a specification.

This invention relatesto brake mechanism for single cars or trains, and it relates particularly to that class of these'devices in which an electric motor is utilized for imparting movement to the operative parts of the device.

The primary object of the present invention is to provide a brake mechanisniwhereby the power necessary to check the movement of the Wheels of a vehicle may be applied instantly and in a way-which affords perfect control Further, the object ofthe invention is to provide a brake mechanism so constructed and arranged that the brake-shoes may be moved into and out of contact with the wheels of a vehicle either through the me dium of an electric motor or manually at will, thus adapting the device for use under varying conditions.

The invention consists in the novel construction and arrangement of the parts, sub stantially as hereinafter described and claimed.

One form of embodiment of the invention 1S shown in the accompanying drawings, in which Figure 1 is a plan view of the trucks of two cars, showing my, braking device applied thereto. Fig. 2 is an enlarged plan view showing particularly the means for connecting an electric motor with drums by which the brake-chains are operated. Fig. 3 is a detail view on the line indicated by line 3 3 of Fig. 2. Fi 4 is a detail view on the line indicated by line 4 4 of Fig. 2. Fig. 5 is a view, partlv in section, of the means formanually operating the brake; and Fig. 6 is a face view of the controller for operating the brake-1notor. i

In carrying-out my invention, I mount on the truck of a single car or on the truck of one car of a train an electric motor which is supp ied with current either from the same source as that from which the propelling-Inotor is supplied in an electric car or from some other source when the mechanism is applied to a car or train propelled by power other than electricity.

In the specific application shown in the ac companying drawings, and which will be new described, the device is shown applied to electric cars and the power for operating the brake is taken from the same source as that 'from which the.propellinganotor is supplied.

In the drawings, 1 1 represent the support ing-Wheels of a car to which are applied brake-shoes, through bars 2 2, of any of the well-known constructions.

Mounted adjacent to each axle 3 of the car is a driving-motor 4, receiving a current through conductors 5 5, extending from a controller 6. Currentis supplied. the motors through the controller 6 from conductors 7 7 receiving a current from any of the usual sources. Connected. with the conductors 7 7 by branch wires 8 8 is a controller 9, and from this controller extend conductors It), connecting the controller 9, and an auxiliary 'mot-or 11, suitably mounted on the truck oi a car. The motor 11 is connected to the brakebeams of the car, so that when the armature thereof rotates in one direction the brakeshoes will be applied and when it rotates in the other direction they will be released, and the means by which this connection is e'l fe'cted will now be described.

Mounted on the armature-shaft of the motor 11 is a pinion 12, whichmeshes with a gear 13. The gear 13 is fixed on ashaft 14, one end of which is provide with a worm 15, which is arranged to engage the teeth of a gear 16, fixed on a drum-shaft 17. Any suitable number of drums 18 are mounted on the shaft 17 and around these drums are wound chains connected. to the brake-beams. In the present illustration three drums are shown, two being for the control of the brakebars on the car on which the motor is mounted and the other being for control of thc bars of one or more adjoining cars. Kiln the truck of each car adjoining that on which thcinotor 11 and the mechanism comiected with it-is mounted I arrange a loner-1%),mnnectcd at each end to one of the brake bzlis of the car. A connection 20, extending from one oi'thc drums 1S, is united with the lever It) by means of a turnbuckle 21 and a rod 22. Two

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rods '22 are attached to each lever 19. They are of a lcngthto extend to points between the truck of the car on which the lever is mounted and those of adjacentears, where they are connected either with the extension from the drum or to a corresponding rod of an adjacent car by an easily detachable and adjustable device, such as a turnbuckle. By this arrangement of parts I am able to apply the brake-shoes of any number of cars by the employment of a single motor on one car of a train.

The use and operation of the brake mechanism described will be clear from the foregoing description. I 'hen the'brakes are to be applied, the current is admitted to the motor 11 through a controllersuch, for instance, as that shownin Fig. 6-in a direction to wind the chains on the drums. transmitted through the described connections to the brake-bars, and the shoes will instantly be applied to the wheels. 'hen the car or cars are stopped, the current is cut ofi, leaving the shoes applied until it is desired to start the cars. No means for holding the parts in position to keep the brakes applied other than described is necessary, as the interposition of the worm in the connection between the motor and the drums is sufficient to check any movement of the drums, the movement of the gear fried to the drumshaft in a direction to unwind the chains being checked by engagement with worm. To release the brakes, the motor is caused to 1'0- tate in the opposite direction by the proper admission of current to the motor through the controller. In order that the brakes may be both applied and released by hand or may be released in this way when after they have been set through the operation of the motor the current has intentionally or otherwise been cut off from the car, I provide means independent of the electric motor for the purpose. To this end I extend the shaft 14 toapoint adjacent to the position occupied by the person controlling the movement of the cars-for instance, to the platform occuied by the motorman on an electric car. On the shaft 14 is fixed abevel-gear 23, and a corresponding gear 24, fixed on a shaft 25, is arranged to be brought to mesh with it. The shaft is suitably mounted in brackets and has a handle 26 for rotating it. The shaft is normally held in a position to separate the gear 23 and 24 by a spring 27, arranged to bear at one end on under face of the gear 24 and at the other end on a stud 28. A forked This motion is lever 1a is hinged adjacent to and bears on a collar 30, attached to the shaft 25. The free end of the lever is adapted to be depressed by the foot of an operator, and when this is done and the gears 23 and 24 brought into contact a connection between the shaft and the brakes is established and means for applying or releasing the brakes by hand, is afforded.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A brake mechanism comprising brake- ,beams mounted on a car-truck and carrying shoes, an electric motor mounted on the same truck, drums connected with the motor, connections between the drums and the brakebeams, brake-beams mounted on an adjacent truck, a lever for operating the beams, a rod extending from the lever, and a detachable connection between the rod and one of the drums; substantially as described.

2. A brake mechanism comprising brakebeams mounted on a car-truck, an electric motor mounted on the same truck, drums arranged adjacent to the motor, a connection between the motor and the drums consisting of a shaft carrying a worm, gears connecting the shaft and the motor and a gear connecting the worm and the drums, connections between the brake-beams and the drums, brakebeams on an adjacent truck a lever for operatmg them, and a detachable connection between the lever and one of the drums; substantially as described.

3. A brake mechanism comprising brakebeams, an electric motor, a connection between the brake-beams and the motor including an elongated shaft, a shaft adapted to be rotated by hand, and a detachable connection between the two shafts, substantially as described.

4. A brake mechanism comprising brakebeams, an electric motor, drums connected with the brake-beams; a shaft interposed betweenthe motor and the drums and connected to both by gearing,

V a shaft adapted to be rotated by hand and means-for detachably connecting the two shafts; substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGER. YANCEY.

'itnesses:

Coxni-in Mtfxxnn, J. H. SrGGEns. 

